The ST43 solar LED streetlights have lit up the roads in the UK, taking advantage of clean and free solar energy. The problem with solar lights is that they are weather-dependent. The UK has a reputation for having cold and wet weather. For this project, ST43 performed perfectly even on cloudy days. High quality and large capacity LiFePO4 batteries enabled the ST43 to last up to 7 rainy days with only 8 hours of charging. In addition, some solar street lights have large solar panels which may break the neat view around the road. However, ST43 matched well with the surrounding landscape. The all-in-one design made ST43 compact and easy to install.